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MEDIUM severity

CVE-2025-52277 — yeswiki

MEDIUM

CVE-2025-52277 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in yeswiki/yeswiki. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

YesWiki Cross Site Scripting vulnerability

Also known asGHSA-29cj-cxw4-v4j2
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Nov 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-52277.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs34th percentile — riskier than 34% of all scored CVEsHighest risk
0.00%0.30%0.60%0.90%0.1%0.4%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘yeswiki/yeswiki

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Cross Site Scripting vulnerability in YesWiki v.4.54 allows a remote attacker to execute arbitrary code via a crafted payload to the meta configuration robots field

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐘Packagistyeswiki/yeswikiall versionsNo fix

Affected Products

1 product · 1 configurations
Application
yeswikiyeswiki
1 version
4.5.4

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for yeswiki/yeswiki, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of yeswiki/yeswiki for CVE-2025-52277. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

Cross Site Scripting vulnerability in YesWiki v.4.54 allows a remote attacker to execute arbitrary code via a crafted payload to the meta configuration robots field
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CVE-2025-52277: yeswiki RCE (Medium 6.1)